Seignelay (disambiguation)

Seignelay may refer to:


 * Seignelay, commune in the Yonne department in Bourgogne-Franche-Comté in north-central France
 * Jean-Baptiste Colbert, Marquis de Seignelay (1651–1690), French politician
 * Seignelay River, river of the Côte-Nord region of Quebec, Canada
 * Seignelay River, former name of the Kankakee River in Illinois, United States
 * Seignelay,a French Navy armoured cruiser, named after the Marquis de Seignelay